Long afterglow phosphorescent sensor materials for fiber-optic thermometer
Long afterglow phosphorescent sensor materials for fiber-optic thermometer
复制标题
光纤温度计用长余辉磷光传感器材料
DOI：
10.1063/1.1540719
复制
发表时间：
2003
影响因子：
1.6
通讯作者：
E. Toba
中科院分区：
文献类型：
--
作者：
H. Aizawa;T. Katsumata;J. Takahashi;K. Matsunaga;S. Komuro;T. Morikawa;E. Toba
用各种辅助活化剂（Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm， Yb和Lu）掺杂的长时间磷光SrAl2O4荧光粉已被评估用于光纤温度计的应用。在这个温度计中，温度的测量是基于余辉磷光的寿命和/或强度对温度的依赖，余辉磷光是由被困载流子的热激发主导的。长磷光光纤温度计的特性与利用荧光粉荧光寿命的传统温度计有很大的不同。长余辉磷光传感器头的余辉磷光寿命和强度在室温附近的狭窄温度区域显示出较大的正温度系数。长磷光光纤温度计的灵敏度和温度范围很大程度上取决于磷光体的陷阱深度和陷阱密度。由于陷阱深度和陷阱密度随…
Long duration phosphorescent SrAl2O4 phosphors doped with various auxiliary activators (Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) have been evaluated for the fiber-optic thermometer application. In this thermometer, temperature was measured based on the temperature dependence of the lifetime and/or intensity of the afterglow phosphorescence which was dominated by the thermal excitation of trapped carriers. Characteristics of the long phosphorescent fiber-optic thermometer are quite different from those of the conventional thermometer using fluorescent lifetime of the phosphors. Lifetime and intensity of the afterglow phosphorescence from the long afterglow phosphorescent sensor heads show large positive temperature coefficients in the narrow temperature region around room temperature. Sensitivity and temperature range of the long phosphorescent fiber-optic thermometer depend strongly on the trap depth and the trap density of phosphors. Since the trap depth and the trap density vary with a...